ASTROSAT CZTI

Data Quality Report

Orbit 41907

Creation date: 2024-06-27T22:34:14.653985
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_099T01_9000005716_41907cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41907cztM0_level2_quad_clean.evt
Size (bytes)460,321,92085,556,160
Size439.0 MB 81.6 MB
Events in quadrant A3,336,437614,970
Events in quadrant B2,904,446624,989
Events in quadrant C3,248,721573,733
Events in quadrant D7,135,500403,425

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131632
B0122402
C0127672
D0247272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5330440.825516%
B53301793.358349%
C53302755.159475%
D5330142926.810507%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7214 5331 37 37 0.51% 0.69%
B 7214 5330 130 130 1.80% 2.44%
C 7214 5331 272 272 3.77% 5.10%
D 7214 5331 1422 1422 19.71% 26.67%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 520244 4275.29 592 581 121.6
A 14 24 465279 3823.09 592 581 121.6
A 15 223 59318 483.23 592 581 121.6
B 5 255 560243 4948.12 589 574 113.1
B 0 245 15069 128.15 589 574 113.1
B 12 111 14075 119.36 589 574 113.1
C 0 10 794589 5996.65 569 573 132.4
C 15 214 207978 1566.39 569 573 132.4
C 0 15 25189 185.91 569 573 132.4
D 12 79 4922847 42319.43 477 465 116.3
D 12 6 111818 957.34 477 465 116.3
D 13 249 88442 756.37 477 465 116.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter